A couple of days ago I read a blog post by Stephen Ramsay, a professor at the University of Nebraska-Lincoln and a Fellow at the Center for Digital Research in the Humanities. In it, he mentions that he has all but abandoned the GUI and finds the command line to be "faster, easier to understand, easier to integrate, more scalable, more portable, more sustainable, more consistent, and many, many times more flexible than even the most well-thought-out graphical apps." I found this very thought-provoking, because, like Ramsay, I spend a lot of time thinking about "The Future of Computing," and I think that the CLI, an interface from the past, might have a place in the interface of the future.

Seeing GUI as a superset of CLI is probably also not particularly helpful, when tons of data people care about doesn't really exist in textual form, but in graphical (sure, pedantically we might go down to how it is represented under the hood, but...)